Size: 10-InchThis Sound 8 ohm 10 inch driver has a max wattage of 280 watts and is designed and engineered right here in the USA. This subwoofer features a 50oz magnet with bumper plate, vented pole piece, accordion edge surround and polymer laminated cone. This subwoofer is a high end, pro audio transducer optimized for all musical instrument, DJ, car audio and professional applications.